Prepare the salmon by placing it on a sheet of heavy-duty aluminum foil. Spray the foil lightly with non-stick cooking spray, then arrange about 5-6 slices of lemon in a row and put sprigs of dill on top.
Set the salmon fillet on the lemon and dill, then brush with melted butter. Sprinkle with salt, pepper, and minced garlic.
Add more lemon slices and dill if desired. Fold the foil over and seal all edges to keep in the steam.
For the rice, add 1½ cups of water to the bottom of the pressure cooker and pour in the uncooked rice blend. Stir well.
Place a trivet inside the pot and set the foil-wrapped salmon on top.
Seal the Instant Pot. Set to pressure cook for 5 minutes.
When the timer ends, let it do a natural pressure release for 5 minutes before turning the valve for a quick release of any remaining pressure.
Cautiously remove the foil packet and serve. This method keeps the fish moist and results in flaky salmon and fluffy, well-cooked (rinsed) rice.